Water-tube boiler.



PATENTED SEPT. 4, 1906.

R. LOGS. WATER TUBE BOILER. APPLICATION FILED AUG. 10; 1905.

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' RUDOLF LOOS, OF DUSSELDORF, GERMANY.

WATER-TUBE BOILER.

Specification of Letters Patent.

Patented Sept. 4, 1906.

Application filed August 10, 1905. Serial No. 273,511.

To It 10700111, it 771,114 concern.-

Be it known that I, RUDOLF LOOs, residing in the'city of Dusseldorf, Germany, have invented certain new and useful Improvements in ater-Tube Boilers; and I do hereby declare that the following is a full, clear, and exact description of my said invention, reference being had to the drawings that form part of this specification.

The invention relates to a chamber watertube boiler with tube ranks arranged side by side, these ranks crossing each other and having different inclinations. All these tube ranks are led from a common back waterchamber to a common or divided front steamchamber in such a manner that the more-inclined tubes run into the water-chamber deep below the less-inclined tubes, whereas they run into the steam-chamber above these lessinclined tubes. In this way water-currents of different speeds are obtained, which, assisted by the special leading of the heatinggases, influence favorably the formation and leading away of the steam in such a manner that the water and the steam in the n1ore-inclined tubes having naturally a higher speed act upon the contents of the less-inclined tubes on the one hand in a driving and on the other hand in a sucking manner.

The fire-chamber is so arranged that the heating-gases will first flow along and around the 11101 e-inclined tubes until they arrive at the'crossings between the two tube systems. Here they are thoroughly mixed by encountering an obstacle and are forced to effectively give up their heat to both tube systems.

Figure 1 represents a longitudinal section of the new boiler, one series of the tubes a be ing less inclined, whereas the other series I) is much more inclined. 0 indicates the common water-chamber and (Z indicates the common steam-chamber, both chambers being arranged parallel to one another. Fig. 2 is a front view, partly in section, of Fig. 1. Fig. 3 represents a modific ation of the new boiler, in which the tubes 6, strongly inclined, enter at the upper end into a special steam-chamber e and at the lower end into the lower part of the common water-chamber c.

The boiler-tubes a and b are arranged in alternating rows, the tubes of each row being set vertically one below the other. All tubes 0 are parallel to each other, and all tubes 1) are also parallel; but their dip is greater than that of tubes (1,.

The tubes 7) of the boiler represented in Fig. 1 enter the deepest part of the back chamber 0 and receive the cooler water, while the heatinggases touch them first, so that the speed of the water therein will be higher than in the tubes a.

In the boiler represented in Fig. 3 the water is forced to make a complete circulation. It goes from the upper boiler into the chamber (1, runs through the tubes ainto the chamber c, and from there it is led through. the tubes 6 into the chamber 0, which conducts the steam into the steam-dome of the boiler.

Having thus fully described my invention, what I claim, and desire to secure by Letters Patent, is

In a boiler, a first set of inclined parallel tubes arranged in vertical rows, and a second set of differently-inclined parallel tubes arranged in vertical rows, the rows of the second set alternating with and crossing the rows of the first set, combined with a water-chamber and a steam-chamber, the rows of the first set of tubes leading from the lower portion of the water-chamber to the steamchamber, the rows of the second set of tubes leading from the upper portion of the waterchamber to the steam-chamber, and the tubes of the first set entering the steamchamber above the corresponding tubes of the second set, substantially as specified.

Signed by me at Dusseldorf, Germany, this 29th day of July, 1905.

RUDOLF LOOS.

WVitnesses W'ILLIAM ESSENWEIN, PETER LIEBER. 

